MESON Chess Problem Database

Problem Display
PID: 214573 (8/3K3Q/3B4/4R3/3k4/8/8/N6N w - - 0 1)

Seymour, Robert Hoe

Newark Sunday Call, 1877

8/3K3Q/3B4/4R3/3k4/8/8/N6N

#2

6 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3+?
      • 1...Kc4
        • 2.Qc2#
      • 1...Kc3!
    • 1.Sf2?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc3!
    • 1.Bb4?
      • threat
        • 2.Qe4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Kxe5!
    • 1.Re3?
      • threat
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd5
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kxe3!
  • Keys
    • 1.Rd5+!
      • 1...Kc3
        • 2.Qc2#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc4
        • 2.Qd3#
      • 1...Kxd5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR1(F)
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • R(C);CHECK
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);P-FLIGHT::QAB1(F)
      • K(a);P-FLIGHT,XR(C)::QAR2(F)
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